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os: TestErrIsNotExist in error_test.go is not robust #45407

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perillo opened this issue Apr 6, 2021 · 2 comments
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os: TestErrIsNotExist in error_test.go is not robust #45407

perillo opened this issue Apr 6, 2021 · 2 comments
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FrozenDueToAge help wanted NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. Testing An issue that has been verified to require only test changes, not just a test failure.
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@perillo
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perillo commented Apr 6, 2021

What version of Go are you using (go version)?

$ go version
go version go1.16.3 linux/amd64

In the testErrNotExist function, the code calls os.Chdir expecting to fail, but does not restore the original working directory in the case where it does not fail. The following code however assumes that os.Chdir may not fail.
@dmitshur dmitshur added NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. Testing An issue that has been verified to require only test changes, not just a test failure. labels Apr 6, 2021
@dmitshur dmitshur added this to the Backlog milestone Apr 6, 2021
@gopherbot
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Change https://golang.org/cl/308849 mentions this issue: os/os_test: make testErrNotExist return to cwd if os.Chdir succeeds

@gh4n
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gh4n commented Apr 9, 2021

Had a go at fixing this, would appreciate any/all feedback

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@dmitshur @bcmills @perillo @gopherbot @gh4n